So i have the news. It was a bit of a shock and i've got an interesting journey ahead and a bit of a battle. I am starting agressive treatment for the next few months to fight the diagnosis of brain cancer. Please stay positive for me and ill try to update you guys on my progress 🤞🏼 xx

Johnny made the shock announcement in August last year that he had been diagnosed with brain cancer and had to undergo emergency surgery to remove a 7cm tumour, followed by chemotherapy treatment.

A year on from his surgery, the actor posted to Instagram, 'Today is exactly a year since i was rushed to hospital to have an emergency operation to remove a brain tumour, it has been a crazy ride and I'm not quite finished yet but i want to share some snaps of the past year and say thank you to everyone who has been there for me and supported me throughout this time.'

Today is exactly a year since i was rushed to hospital to have an emergency operation to remove a brain tumour, it has been a crazy ride and im not quite finished yet but i want to share some snaps of the past year and say thank you to everyone who has been there for me and supported me throughout this time 😃 #braincancer #fuckcancer

The pair have a long history together, with Guy taking on the role of Johnny's mentor during his stint on The X Factor in 2011 before becoming a pillar of support during his cancer treatment.

On the red carpet at the Aria Awards last year, Guy gave fans an update on how his mate was doing.

'I speak to Johnny a lot so I saw him literally not long ago and look, he’s such a great guy,' he told Yahoo 7 . 'But he’s got a lot of good people around him I think and I’m there for him. I’ll always champion him and I have from the start.'